Back to Ganoksin | FAQ | Contact

Chemically Removing the Cooper Flash


#1

Novice needs help.

I am making headpins for pearls with goldfilled wire. The wire
cleans up beautifully in the pickle and polished in the tumbler but
the rosey color doesn’t match the earwires. Is there a quick way to
remove it?

I seem so remember that there is a chemical was to remove the cooper
flash that comes up after melting gold-filled wire. What I’m
remembering is from a class I took and the example was the cooper that
came up on a piece of brass. I think we “boosted” the pickle with
hydrogen peroxide.

Thanks

Nan


#2
    I am making headpins for pearls with goldfilled wire.  The wire
cleans up beautifully in the pickle and polished in the tumbler but
the rosey color doesn't match the earwires.  Is there a quick way
to remove it? 	(A question:  Isn't most of the headpin concealed by
the pearl so that only the ends are visible?) 
My response:   Rather than another step, try to prevent the color

change. Are you using the boric acid/alcohol dip & flame to protect
the goldfill? If not, try that. Otherwise, the color change could be
related to the alloys used in the GF, and you might try another
"blend" to avoid the extra chemical step.

I'm assuming that you are melting the end of the wire to form a

ball. My experience has revealed another problem - in time, without
the gold covering the brass core, those melted ball ends turn green.
Here’s what works for me. I use X-easy gold solder to re-coat the
melted end. Now that I think about it, actually melting enough
solder to form an adequate ball and putting the ball of solder on the
end of the wire would probably make the headpin in a single step. A
bit more cost, but a much nicer finished product that doesn’t turn
green. Just a thought. Also thank you Hanuman/Dr. Aspler for your
wonderful efforts in maintaining Orchid. This is a true gift.

Judy in Kansas, where it rained buckets this a.m.  What a delightful

sound for now the wheat will sprout!